Anyone who's actually read his posting history the past 4 years.

And the most diverse and only nation to integrate a formerly subjugated people as equals, but when you are self loathing, you'll find a reason to take issue with anything.  Do a substantial portion of European nation citizens loathe their country or is this a uniquely American problem?

Except that’s not what he’s saying. No one is arguing against a historic oppression of black people. I’ve repeatedly asked for what examples exist today, and no one has bothered to say anything that is demonstrably true or even on topic. His statement is that the systemic oppression exists today, not that slavery and segregation were coded into American law. Nor am I denying there are consequences in lost opportunity due to that historic injustice. No one is denying any of that.

What I’m asking is for examples of how racism is still systemic in 2021, and what can we do to solve it. Because I believe a lot of the examples people accept are true, don’t hold up to scrutiny. And that matters when you’re talking about reordering society, it’s not something that is just shrugged off as “obvious”.

But you didn't touch it.  You just made a declarative statement with no examples or criteria to judge on.  You see a person of color, and inherently assume their upbringing was worse than yours, mine or any other random person with pink pigment.  If you can't explain why and are angry someone is asking you to provide examples you don't have, that's textbook cognitive dissonance.  In any other situation your actions would be called racist, as that's the text book definition of prejudicing against someone because of their skin color.  But because it's been declared a noble position, all higher thought required of every other position is waived. 

Proof?  There are countless programs for poor minorities.  It's called affirmative action.  Who is more likely to get into Harvard, all things equal on the application, who gets in first?  All things equal, who does corporate America hire?  Who does the state and federal government hire?  Unlike you, I know these things to be true because I've lived them or there is empirical evidence for their statement.  I sit on a diversity hire board at work, I know that we're looking to hire "diverse" candidates. (Diverse is code for non-white in case you didn't get the memo). Affirmative action is a thing, and has been for over a generation.  So who has more opportunity in 2021 if you're entering adult hood?  I'll eagerly await your response with other examples, but you don't get to pretend the reality I just stated isn't part of the overall picture.

Do you have anything to support this?  Uber allows you to hire from black businesses, I don't know of any other ethnicity that is afforded that.  Do you have any evidence that poor white people own businesses at a higher rated than blacks?  Do you have any evidence they choose through race alone, more people of their own pigment?  These are really bold statements that I haven't seen evidenced with any kind of empirical data.  My own life experience has shown me that a substantial amount of black Americans are entrepreneurs.  Far more relative to my white friends.  I won't make a declarative statement without evidence, so I can't state this is true.  But since we're just tossing out perceptions, mine if vastly different than yours and I've lived all over the US.

Hog wash.  All my friends and family who were steel workers and coal miners and watched their jobs vanish as EPA regulations and Chinese steel saturated the market are doing just great!  Sure, Appalachia has the highest opioid abuse per capita in the nation, and the schools are underfunded and a century old.  But they're white, so they have enormous privilege.  Not like say Corey Booker whose parents were both IBM executives, that young men had to overcome 5x as much as the poor kid in Wheeling, WV whose dad was laid off by the coal mine 5 years before turning to a bottle and mom climbed up inside an oxy bottle.  If you don't understand that inherent privilege, I'm not required to enact the labor to explain why it's there. Honestly I've never been forced to, and get pats on the back parroting the talking points of people society has told me I should emulate.  Now excuse me while I go break into a state house and set fire to some police station and federal courthouses while posting online how outraged and confused the people I've harassed at every turn reciprocate my violence.